50 Zoological Society. 
A. Wing-membrane extending to the distal end of tibia. 
a. Ears moderate, or rather small, rounded ; tragus rather short, 
rounded at the apex; heel-cartilage short. 
a. 1. Nostrils separated by a moderately 
wide space, and opening sublate- 
rally... 22. 84 Esa .. Ll. Vesp. tristis. 
a, 2. Nostrils with a narrow space be- 
tween them (a distinct notch, how- 
ever, in that space), and opening ’ 
almost ii‘front i075. 2ehe08 2. Vesp. Eschscholizii. 
6. Ears large and pointed; tragus long, narrow and pointed ; 
heel-cartilage long. 
b. 1. Hind-foot very large.......... 3. Vesp. macrotarsus. 
6.2. Hind-feot Smalt 2% oe esas: 4. Vesp. pellucidus. 
B. Wing-membrane extending to base of toes. 
a. Ears short, rounded at apex; tragus 
short, subpoimted) =. .ctseeh -bo3 5. Vesp. Meyeni. 
b. Ears large, pointed ; tragus long, at- 
tenuated and pointed ........ 6. Vesp. rufo-pictus. 
VesPErTILio TRisTis. Vesp. vellere molli, nigricanti-fuliginoso ; 
auribus mediocribus, rotundatis ; tragis mediocribus arcuatis, apice 
rotundatis ; rostro brevi obtuso ; alis angustis. 
unc. lin. 
Longitudo ab apice rostri ad caude basin.... 2 5 
CHU 25ers ee tes ete Peake ee eee 
GNNOTECN os. setae ees ee eS Ze 
QUITS <r ha sk S65 SL OES pret ae UE 0 32 
Alarum amputdes 2.42 ss eka st eb n 8 ee 13 0 
The fur is dense in this species, but not long; dense fur extends 
on to the head, and leaves but a small portion of the muzzle, which 
is covered with shorter hair: the general colour is sooty black, and 
the hairs appear to be uniform to the root; those on the belly are 
slightly tinted with greyish at the point. The incisor teeth are 
=. The forehead is much arched; the muzzle short and obtusely 
rounded, very broad and hairy; the lower lip has a narrow trans- 
verse naked area at the tip; the nostrils are sublateral, moderately 
separated, and there is a slight depression between them. ‘The 
ears are moderate, rounded, but with the upper, or anterior, margin 
nearly straight; the tragus is curved, and rather obtusely rounded 
at the point, about 23 lines in length, and 1? line in width. The 
wings are rather narrow, and have the membranes black; they ex- 
tend to the heel of the hind-foot, which has the metatarsus narrow 
and long, the distance from the heel to the base of the toes exceeding 
the toes in length; the toes are shortish and equal, the nails are also 
short and but little curved; the heel-cartilage is short, bent back, 
and not easily brought in a right angle with the tibia, as in many of 
the species of the present genus. ‘The hind-legs are rather long; 
